Fix leaks in aura_unittests

ui/base/gestures/gesture_recognizer_impl.cc

Index: ui/base/gestures/gesture_recognizer_impl.cc
diff --git a/ui/base/gestures/gesture_recognizer_impl.cc b/ui/base/gestures/gesture_recognizer_impl.cc
index bb3038c43355b9e72a1c59e3f4560c2869420cc3..861c8dccc3b61e1188274db3461a8e09f705cae1 100644
--- a/ui/base/gestures/gesture_recognizer_impl.cc
+++ b/ui/base/gestures/gesture_recognizer_impl.cc
@@ -332,6 +332,8 @@ GestureSequence::Gestures* GestureRecognizerImpl::AdvanceTouchQueue(
       } else {
         gestures->insert(gestures->end(), current_gestures->begin(),
                                           current_gestures->end());
+        // current_gestures leaks here, but deleting it causes
+        // double free on some memory. crbug.com/146465.
       }
     }
   }